From potrayals in Chinese movies, I think it is mahjong. Feel free to correct me!
麻將據說是中國國粹.
台灣麻將打十六張牌. 和中國麻將不太一樣.
Oh, this is interesting topic. Does anyone tell me how much is mahjong popular? Like generation, frequency, where you play etc. Because I've seen old people doing mahjong in a park in China many times, but not young or middle age people.
majiang, no doubt
you are right majiang is the most popular gambling method
I'm not 100% sure, but I have been to Macau, and the money flowing through there is way more than Vegas. It's pretty amazing actually the casions they have.